Feeding mechanism.



M. KRAUT.

FEEDING MECHANISM.

APPLICATION FILED JUNE 16. I915.

Patented Nov. 30. 1915.

2 SHEETS-SHEET 1.

M. KRAUT.

FEEDING MEQHAMSM. APPLICATION FILED JUNE '16. I915.

Patented Nov. 30. 1915.

MAX KRAUT, F IBISIBEE, ARIZONA. I

FEEDING MECHANISM.

Application filed June 16, 1915. Seria1No.34,43 6.

1 0 all whom it may concern:

Be it known that 1, Max KRAUT, a citizen of the United States, residing at Bisbee, in the county of Cochise and State of Arizona, have invented certain new and useful Improvements in Feeding Mechanism,

" ofwhich the following is a specification.

My invention relates to new and useful improvements in feeding mechanisms, the primary object of my invention being the provision of a device for delicately and accurately feeding predetermined quantities of liquids and particularly designed for insuring a positive, reliableand steady feed of oil, acid or other liquids in connection with fiotationmachines in ore dressing.

In the art of ore dressing, particularly by flotation methods, it is necessary that a inventionwill be more sists in providing a further steady and reliable feed of oil, acid and other liquids, be insured, these liquids, in many instances, being of a viscous. or semiviscous nature and sometimes gritty. Because of this, it is almost impossible to insure the proper feed by the use of valves as the valves soon become clogged. The chief object of my invention is,the provision of a device which cannot become clogged, under any circumstances, and which may be delicately adjusted to feed any desired amount of liquid.

More specifically, my invention comprehends a revolving feed cylinder, the peripheral face of which is partially immersed in the liquid to be fed and a scraper designed to take any desired amount of the liquid picked up by the feed cylinder from the face thereof.

Inthis connection, a still further object of my invention consists in the provision of a simple an delicate mechanism by means of which the scraper may be moved toward and away from the feed cylinder to vary the thickness of the liquid layer which will be removed from the peripheral face of the cylinder. 1

A still further object of my invention conand independent adj ustingv mechanism by means of which the scraper may be moved longitudinally of the cylinder to vary the width of the layer of liquid which it will remove.

Wilh these and other objects inview, my

trated in. the accompanying drawings, and

then. specificallv-pointed out-in He claims Specification of Letters Patent.

fully described, illus- Patented Nov. 30, 1915.

in all the views of the drawings by the same reference characters.

My present invention includes a feed cylinder 10 of any suitable material, generally metal. mounted upon a revoluble.. shaft 11 journaled in bearings 12 carried by any-- suitable frame structure 13 and vertically disposed in such a manner that its lower peripheral portion extends into a liquid conminer 14 and below the level of the liquid therein. This feed cylinder maybe of any suitable dimensions, being generally onehalf'inch to an inch in length and may be driven in any desired manner and at any proper speed, the speed at which it is driven being, of coursej-one of the factors determining the rate of feed of the liquid c'ontained in the receptacle 14. Preferably, the frame 13 extends from .a base 15 and extending from this base is a frame forming plate 16 which, adjacent its upper end and preferably in the same horizontal plane as the shaft 11, is provided with a laterally directed tubular bearing 17 to revolubly receive the unthreaded shank portion 18 of a feed screw 19, which screw is held against longitudinal movement through the bearing sleeve 17 by spaced collars 20 and 21. The outer end of the shank 18 is provided with a hand wheel 22 and the threaded portion 19 in turn. is secured to the lower tially to the cylinder and such upper end has its upper face beveled to provide a knife edgeQfi for engagement with the feed cylinder. Strips of metal 26 are generallysecured to the upper face of this scraper 24, extending longitudinally thereof, and having upwardly directed flanges 27 which converge from the upper to the lower end of the scraper to providea feed passage 28 through which the oil, acid or other liquid scraped from the feed cylinder will pass, these flanges therefore, preventing any escape of frame 16 and the free end of its substantially horizontally disposed arm 30 carries a laterally directedrod .31 which, at all times, engages against the lower face of the scraperQl near its lower end. The free end of the arm 32 of the lever 29 carries a nut 33 through which is threaded an adjusting screw 34 having a hand wheel 35 at its outer; end anda conical point 36 at its inner end. This point engages a bearing plate 37 carried by the frame 16 and it will therefore be seen that turning of the hand Wheel 35 ,as long as the point 36 is held in engagement with the plate 37, will cause swingingof the bell crank lever 29. A helic'al spring 38 connects the scraper blade and frame in such a manner as to, at all times,

hold the scraper in engagement with the rod 31 and, consequently, at all times, hold the conical. point 36 of the adjusting screw '34 in engagement with the plate 37.

' From the foregoing description, the operation of my improved liquid feeding device I will be readily understood. .Assuming that the container 14 is filled with the liquid to be fed, at a level above the lower peripheral face of thefeed cylinder 10 and that this "cylinder is being driven in the direction of the arrows in Figs. 1 and 2 of the drawings, it will be clear that if the knife edge 25' of the scraper 24= is brought closely enough to the peripheral face of the feed cylinder, apart or all of the liquid adhering to the peripheral face of the cylinder will be scraped off and will flow through the passage 28. By proper adjustment of the screw 84, the knife edge 25 of the scraper may be brought .as closely as desired to the peripheral face of the feed cylinder, thereby permitting adjustment of the device to remove a layer of liquid from the cylinder of any desired thickness. Again, by adjust- -ment of the feed'or adjusting screw 19, the

scraper may be moved longitudinally of the peripheral. face of the'feed cylinder to adjustably vary the width of the layer which shall be Fremoved from the pe-- "riphe'rah-face yoff the cylinder, it being i apparent" @thatthe greater, j the width and thickness of the layer removed, the

more- -rapicl will be the. feedof liquid. It. 1 5. A'feeding mechanism includingaliquid 13 will therefore beclear that the amount of any particular liquid fed will be dependent upon the speed at which the feed cylinder 1.0 is rotated, how close the scraper blade is held to the feed cylinder and what proportion of the length of the feed cylinder the scraper is in juxtaposition to.

Theabove described mechanism may be cheaply manufactured, will not get out of be limited to such details, as various. minor changes, within the-scope of the appended claims, may be made at any time, without in the slightest degree departing from 'the spirit of my invention.

Having thus described the invention, what is claimed as new is:

1. A feeding mechanism including a container, a revoluble feed cylinder extending into the container, a scraper disposed in juxtaposition to the peripheral face of the cylinder, and means for adjusting the scraper longitudinally of the peripheral face of the cylinder and locking it in adjusted position.

2. A feeding mechanism including a container, a revoluble feed cylinder extending into the container, a scraper disposed in j uxtaposition to the peripheral face of the cylinder, means for adjusting the scraper longitudinally of the peripheral face of the cylinder, and means for adjusting the scraper to swing one end of it toward and away from the peripheral face of the cylinder, the adjusting meansin each case holding the scraper in adjusted position.

3. A feeding mechanism including a feedcylinder adapted to extend into a liquid containing receptacle, a scraper supported with one end adjacent the peripheral face of the cylinder, means normally tending to move such end away from the cylinden and'means for adjustably moving such end toward the cylinder and rigidly holding it in adjusted position. i

4. A. feeding mechanism including a feed. cylinder adapted to extend into a liquid containing receptacle, a scraper supported with one end adjacent the peripheral face of the cylinder, means normally tending tomove such end away from the cylinder, and means for adjustably moving such end toward the cylindcr,'said means including a lever pivoted intermediate its length, a rod carried by the lower face of the scraper, and an adj usting screw threaded through the opposite end of the lever and held against longitudinal movement.

7 one end of the lever and engagingagainst 125.

container, a feed cylinder projecting into the container, a supporting frame, an adjusting screw rotatably mounted in the frame, a scraper disposed with one end in juxtaposition to the peripheral face of the cylinder, and a nut carried by thescraper and engaging the adjusting screw, whereby the screw may he turned to move the scraper longitudinally to bring any desired portion of the scraper in engagement with the peripheral face of the cylinder and whereby when not turned, the screw will hold the scraper in adjusted position.

6. A feeding mechanism including a liquid container, a feed cylinder projecting into the container, a supporting frame, an adjusting screw rotatably mounted in the frame, a scraper disposed with one end in juxtaposition to the peripheral face of the cylinder, a nut carried by the scraper and engaging the adjusting screw, whereby turning of the screw will move the scraper longitudinally across the peripheral face of the cylinder, and means for swinging the scraper to move its end toward and away from the peripheral face of the cylinder, said means holding the scraper in adjusted position.

7. A feeding mechanism including a revoluble feed cylinder,

and engaging against the lower face of a scraper disposed 'in juxtaposition to the cylinder, means for adjusting one end of the scraper toward and away from the cylinder, and means for adjusting the scraper longitudinally of the cylinder, each of said means maintaining the scraper 1n the position to which said means has moved it.

8. A feeding mechanism including a feed cylinder adapted to extend into'a liquid containing receptacle, a supporting frame, an

adjusting screw rotatably mounted in the I frame, a scraper disposed with one end in juxtaposition to the peripheral face of the cylinder, a nut carried by the scraper and engaging the adjusting screw, whereby the screw may be turned to move the scraper to dispose the scraper along any portion of the cylinder, a lever pivoted intermediate its length, a rod carried by one end of the lever the scraper, a second adjusting screw threaded through the opposite end of the lever and held against longitudinal movement, and a spring constantly holding the scraper in engagement with the rod. In testimony whereof MAX I affix my signature. K AI {in a] 

